Email Formats

{
  "mx": [
    "10 mx.cmhk.com.",
    "10 mx3.cmhk.com.",
    "10 mx2.cmhk.com.",
    "10 mx1.cmhk.com."
  ],
  "spf": [
    "v=spf1 include:spfa.cmhk.com include:spfb.cmhk.com -all"
  ]
}